Improvement in drying lumber



E. WOODS.

` Drying Lumber, 6in., 510.154,!205. Patmedmgiwamx im I THE GRAPHIC OGPHUTO LITHJQIMH PARK PLCEJLY.

UNITED STATES.

PATENT OFFICE GEORGE WOODS, OF OAMBRIDGEPORT, MASSCHUSETTS, ASSIGNOR TOHIMSELF AND GEORGE P. CARTER.

IMPROVEMENT lN DRYING LUMBER, &c.

Specifica-tion forming part of Letters Patent No. 154,205, dated August18, 1874; application tiled Aprii 23, 1874.

To all whom t may concern:

Be it known that I, GEORGE WOODS, of Cambridgeport, in the county ofVMiddlesex and State of Massachusetts, have invented certain new anduseful Improvements in Drying Lumber, 85e.; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use it, reference being had to the accompanying drawing, whichforms part of this specication.

My invention relates to a new and useful process for drying lumber,85e., consisting in the employment of a pipe or receptacle containingcirculating water'of a low temperature, which pipe being located in theheated dryingchamber allows the moisture that evaporates from thelumber, 85e., to condense on and collect upon the outside of saidwater-pipe, from which the condensed water is carried away in aconductor below the Water-pipe, as will now be more fully shown anddescribed.

The accompanying drawing will serve to more clearly show the manner inwhich my process is conducted.

On the drawing, Figure 1 represents a ground plan of my invention, andFig. 2 represents a sectional elevation of the saine.

`Similar letters refer to similar parts wherever they occur on thedifferent parts of the drawing.

a represents a drying room or chamber, heated in the usual manner.` b brepresent a pipe'or receptacle, through which cold water is made tocirculate .by being forced in at c from a force-pump or suitable head.The cold water, after being circulated through the pipe or receptacle b,is forced out at d, from which* it may be conducted to a steam-boiler asfeedwater, or otherwise, as may be desirable. Be-

neath the surface-condensers b b b I suspendy jaar in a suitable manneran inclined trough or conductor, e, into which the condensed water dripsfrom the surface of the condensers b b b. The said inclined conductor eterminates at f, outside the drying-room, or in a similar manner, asshown in Fig. 2.

The lumber, or other articles that are to be dried, may be suspended inthe chamber a in any of the ordinary ways.

'lhe operation of my invention is as follows: After the lumber, or othermaterial that is to be dried, is placed in the chamber a, I heat theatmosphere in the said chamber as usual, and, by keeping up a continualstream of cold water through the pipe or receptacle b b, in a .mannerdescribed, the vapors that evaporate from the lumber, &c., are condensedas water on the surface of the condenserb b, from which it falls inliquid form into the conductor c, and is automatically conveyed from thedryingchamber, as above described.

In this manner Iam able to dry lumber and other articles more rapid andat a less expense as compared with the ordinary methods of drying now inuse. f

Having thus fully described the nature, construction, and operationof myinvention, I wish to secure by Letters Patent, and claim- The process,as herein described, for drying lumber, Sac., consistingin forcingwaterthrough a receptacle in-.the heated drying-chamber, on the surface ofwhich receptacle the moisture from the lumber, &c., is condensed andconducted from the ldrying-room in a manner as herein shown and setforth.

In testimony that I claim the foregoing I have hereunto set my hand this16th. day of April, 1874.

GEORGE WODDS. Witnesses:

ALBAN ANDRN, J oHN R. HEARD.

